requiem shark

[鱼类]真鲨科（Carcharhinidae）鱼

noun

any of a family (Carcharhinidae) of sharks (such as the tiger shark or blue shark) that are found in tropical and temperate waters, are usually gray to brown above and yellow to white below, have a rounded snout with bladelike teeth, and include some that have been known to attack people

obsolete French requiem shark, alteration of French requin

The first known use of requiem shark was in 1896

tune-upnoun

a general adjustment to get everything in good working order

an engine tune-up

resignverb

to give up by a formal or official act

resign an office

to give up an office or position : quit

to yield to without resistance

resign oneself to disappointment

reserve1 of 2verb

to keep in store for future or special use

reserve that shirt for special occasions

to hold over to a future time or place : defer

reserve judgment on that matter

to arrange to have set aside and held for one's use

reserve a hotel room

reserve2 of 2noun

something stored or available for future use : stock

oil reserves

military forces held back or available for later use—usually used in plural

the military forces of a country not part of the regular services

an area of land set apart

a wild game reserve

restraint, closeness, or caution in one's words and behavior

substitute entry 1

the reserves of the football team

put1 of 3verb

to place in or move into a position or relationship

put the book down

to throw with an overhand pushing motion

put the shot

to bring into a state or condition put the matter right put us at risk

put it to use

to cause to undergo something

was put to death

impose sense 1a

put a special tax on luxuries

to set before one for judgment or decision (as by a formal vote)

put the motion

express entry 4 sense 1a

put your feelings into words

to devote or urge to an activity or end

put them to work

invest entry 2 sense 1

put our money in the company

estimate entry 1 sense 1

put the time at about eleven

attach sense 5

puts a high value on friendship

go entry 1 sense 1, proceed

the ship put to sea

put2 of 3noun

a throw made with an overhand pushing motion

put3 of 3adjective

fixed sense 1a, set

stay put until I come back

research1 of 2noun

careful study and investigation for the purpose of discovering and explaining new knowledge

the collecting of information about a subject

research2 of 2verb

to search or investigate thoroughly

research her options

to do research for

research a book

Heimlich maneuvernoun

a method for forcing an object out the airway of a choking person that involves standing behind the person with arms wrapped about the person's waist and applying sudden upward pressure with the fist to the area directly above the navel

cell phonenoun

a portable cellular telephone

requiem sharknoun

any of several large sharks (as the tiger shark) usually found in warm seas that sometimes attack human beings